Texas Instruments SN65HVD255D Evaluation Module SN65HVD255DEVM SN65HVD255DEVM Scheda Tecnica
Codici prodotto
SN65HVD255DEVM
Introduction
1
Introduction
1.1
Overview
Texas Instruments offers a broad portfolio of High Speed (HS) CAN transceivers compatible with the
ISO11898-2 High Speed CAN standards. These include 5V V
ISO11898-2 High Speed CAN standards. These include 5V V
CC
only, 3.3V V
CC
only, 5V V
CC
with I/O level
shifting and galvanic-isolated CAN transceivers. These CAN transceiver families include product mixes
with varying features such as low power standby modes with and without wake up, silent modes, loop
back and diagnostic modes.
with varying features such as low power standby modes with and without wake up, silent modes, loop
back and diagnostic modes.
The Texas Instruments CAN EVM helps designers evaluate the operation and performance of various TI
CAN transceivers. It also provides PCB footprints for different bus termination, bus filtering and protection
concepts. The CAN EVM is provided with the SN65HVD255 installed. It is easily configured by the
customer for the SN65HVD23x, SN65HVD25x, SN65HVD10x0 and SN65HVDA54x CAN transceiver
families as needed by jumper settings, simple soldering tasks and replacement of standard components. A
separate EVM is available for the galvanic-isolated CAN transceiver family.
CAN transceivers. It also provides PCB footprints for different bus termination, bus filtering and protection
concepts. The CAN EVM is provided with the SN65HVD255 installed. It is easily configured by the
customer for the SN65HVD23x, SN65HVD25x, SN65HVD10x0 and SN65HVDA54x CAN transceiver
families as needed by jumper settings, simple soldering tasks and replacement of standard components. A
separate EVM is available for the galvanic-isolated CAN transceiver family.
1.2
CAN EVM
The CAN EVM has simple connections to all necessary pins of the CAN transceiver device, and jumpers
where necessary to provide flexibility for device pin and CAN bus configuration. There are test points
(loops) for all main points where probing is necessary for evaluation such as GND, V
where necessary to provide flexibility for device pin and CAN bus configuration. There are test points
(loops) for all main points where probing is necessary for evaluation such as GND, V
CC
, TXD, RXD,
CANH, CANL, Pin 8 (mode pin), Pin 5 (various functions). The EVM supports many options for CAN bus
configuration. It is pre-configured with two 120
configuration. It is pre-configured with two 120
Ω
resistors that may be connected on the bus via jumpers:
a single resistor is used with the EVM as a terminated line end (CAN is defined for 120
Ω
impedance
twisted pair cable) or both resistors in parallel for electrical measurements representing the 60
Ω
load the
transceiver
“
sees
”
in a properly terminated network (i.e. 120
Ω
termination resistors at both ends of the
cable). If the application requires
“
split
”
termination, TVS diodes for protection, or Common Mode (CM)
Choke, the EVM has footprints available for this via customer installation of the desired component(s).
Figure 1. EVM PC Board
2
CAN EVM User Guide
SLLU158
–
December 2011
Copyright
©
2011, Texas Instruments Incorporated